Engine or motor governor



Dec. 23, 192.4. 1,520,593

I H. MULLER ENGINE OR MOTOR GOVERNOR Filed Now-15, 1922 I W!tne ses: Jnventor:

Patented iii-er. 23, 1924i.

eases rarest orFicE.

HEINRICH Mlj'LLER, O'F BREMEN, GERM'ANY, ASSIGNGR TO ACTIEN-GESELLSCHAFT WESEE, OF EREMEN, GERMANY.

ENGINE E- Applieation filed November T0 aZZ whom it may concern.

Be it known that I, HEINRICH Mt'ILLER, a citizen of Germany, residing at Bremen, Germany, have invented certain new and useful Improvements in an Engine or Motor Governor, of which the following is a specilication.

This invention relates to an engine or motor governor of the kind in which pawls or abntments are operated by a swinging weight into the path, or into position to engage, a lever which actuates the throttle valve controlling the admission of the working fluid, or other control device governing the power supply. According to the invention, in order that the control lever may be held in closed position when the engine speed is excessive, the pawl which brings the lever to this position is arranged to be automatically retained in operative position until it is released by hand when the cause of the excessive speed has been removed.

In the accompanying drawing, Figure l is a front elevation of one form of construc tion of the governor;

Figure 2 is a diagrammatic illustration of its connection with other parts of the engine; and

Figures 3 and 4c are side elevations of the locking device upon a larger scale.

ihe whole governor which is in .itself of known kind is fastened upon an oscillating part a of the engine (Fig. 2), whose movement, shared by the governor, is dependent on the speed of the engine. Thls movement actuates in well known manner a hanging governor weight Z), which swings in a. plane transverse to the plane of oscillation of a. In the position of rest, the weight 5 hangs in a downward direction, and upon the engine speed exceeding a predetermined limit it is thrown upward. The weight is connected by links or slot-ted guides 0 with an upper pawl cl and a lower pawl c, which are set over simultaneously and in opposite di rections by the tilting up of the weight. When the weight is in its lower position, the position of rest, the upper pawl d is set over outwardly, while the lower pawl e is drawn back against the base plate In this position, upon downward movement of the part a, the upper pawl (Z pushes down the control lever g, and so through the me dium of the rods h, 2', 76, Z, and m, connected with the lever opens the throttle valve or IZIQTOR 13, 1922. Serial No. 600,788.

other control device (see Fig. 2, which shows the mid position). If the prescribed engine speed is exceeded the weight 7) is flung upward, whereupon the pawl d is drawn back while the lower pawl e is set outward into position to engage the lever g. AS the part a swings back, therefore, the lever g is struck by the pawl e and so is thrown over, with the result that the throttle valve or the like is closed, or closed to the requisite extent. The weight b is retained in the upper position by a pawl and lever arrangement n, and 0, of known kind, which is released by the lever 9 upon the renewed downward movement of the oscillating part (t: Then the weight swings down, and the pawls d, and c, are set over, and so the lever g is moved back again and the throttle is opened.

If excessive engine speed occurs for any reason, the weight 5 must remain continuously in the upper position until the cause of the excessive speed is removed, so that the throttle or other control device may remain closed. To effect this the function of the arrangement according to the invention shown in further detail in Figures 3 and a is provided, which, in the circumstances mentioned, locks the lower pawl c which brings the lever g to closed position, in its corresponding, i. e. its outward posi tion, so that the pawl cannot be set over by the weight. For this purpose, the invention utilizes a pivotally supported mass p arranged beneath or beside the lower end of the pawl. in the position of rest an abutment 9' of any desired form upon the mass itself, or upon its pivot, or upon its boss, bears against the base plate f. It is further held by a spring 1" which bears lightly against a pin or projection s on the mass. There is connected with the mass a cam or eccentric t, which in the example shown is not integral with the mass itself but is arranged upon its pivot. Naturally, this arrangement may be modified or replaced by an equivalent to suit the particular construction in question. The essential fea ture is that the mass 39 shall co-operate with a cam or eccentric surface. With this last there corresponds a projection or other suitable formation a of the lower pawl e.

At excessive engine speeds, the mass p swings upward at the same time the weight b, overcoming its spring 0", where- 1 to, secure byfLetters Patent, is,

upon the cami. engages beneath the projection a of the outwardly set pawl 6 as shown in Figure I. The mass 29 noW rests against the surface of the oscillating part a (Fig. 2), Whilethe edge of the projection u on the pawl may advantageously bear upon the base plate 7'. In this position, the relation of the parts 6 and p is such that the down Wardly directed pressure of the weight b cannot press back the part 10, so that the pawlne is locked in position. The part 79 cah beturned backto the position of rest byfmwm of a. handle '0.

What I claimas my invention. and desire An l engine, governor comprising a base plate; a governor Weight pivoted to said plate; a link connected to said Weight; paWls pivoted to said base plate and operatively connected With said link, said pawls being adapted to operate a control lever; and a small Weight member pivoted to said plate and provided With a cam, said cam being adapted to contact with one of said pawls to lock it in its outward position on movement of the small Weight member.

In testimony whereof I aflix my signature. N

HEINRICH MULLER. Witnesses:

FRANCIS J. DUGAN,- AUGUST QUICK. 

